Annular blowout preventer with structure convenient to disassemble and maintain

Abstract

The utility model discloses an annular blowout preventer convenient to disassemble and maintain a structure, the outer side of a shell of the blowout preventer is symmetrically provided with positioning inserted link mechanisms matched with an upper cover for use, each positioning inserted link mechanism comprises an open sliding groove, a sliding block is arranged in each open sliding groove, one side of each sliding block is connected with the inner wall of one end of the corresponding open sliding groove through a spring, and the other side of each sliding block is connected with the inner wall of the other end of the corresponding open sliding groove. A supporting plate is installed at the top of the sliding block, a rotating handle is arranged on the outer side of the supporting plate, one end of the rotating handle is connected with a driving rod, a gear is installed on the outer side of the driving rod and meshed with a rack, a moving plate is installed at the bottom of the rack, the bottom of the moving plate is connected with an abutting plate through a plurality of spring shafts, and an inserting rod is installed at the bottom of the abutting plate. According to the annular blowout preventer with the structure convenient to disassemble and maintain, in order to solve the problems that a shell and an upper cover of an existing annular blowout preventer are mostly connected through bolts, and the process of disassembling the upper cover during later maintenance is inconvenient, positioning insertion rod mechanisms matched with the upper cover for use are symmetrically arranged on the outer side of the shell of the blowout preventer.

Description

Technical Field

[0001] The utility model relates to the technical field of annular blowout preventers, in particular to an annular blowout preventer with a structure convenient for disassembly and maintenance. Background Technique

[0002] The annular blowout preventer is a relatively reliable blowout preventer commonly used in oil and gas drilling operations. It usually has large gates equipped with ram-type blowout preventers. When operating, it will form a sealed annular space between the pipe string and the wellbore. In the case of no pipe string in the well, it can also complete well sealing alone, reducing the occurrence of well kick or blowout accidents. For example, the existing annular blowout preventer of model FH35-70 is a blowout preventer dedicated to oil and gas drilling. It consists of a housing, an upper cover fixed to the top of the housing by bolts, and a ram blowout prevention structure arranged inside the housing. Most of the existing annular blowout preventer housing and upper cover are connected by bolts, and it is rather inconvenient to disassemble the upper cover during later maintenance. Therefore, an annular blowout preventer with a structure convenient for disassembly and maintenance is proposed. Content of the Utility Model

[0003] The purpose of the utility model is to provide an annular blowout preventer with a structure convenient for disassembly and maintenance, so as to solve the problem that most of the existing annular blowout preventer housing and upper cover are connected by bolts, and it is rather inconvenient to disassemble the upper cover during later maintenance as mentioned in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an annular blowout preventer with a structure convenient for disassembly and maintenance, including an annular blowout preventer, the annular blowout preventer includes a blowout preventer housing and an upper cover movably arranged on the top of the blowout preventer housing. Integral lifting rings are fixedly connected to both sides of the connecting head of the upper cover. Positioning plug rod mechanisms matched with the upper cover are symmetrically arranged on the outer side of the blowout preventer housing. The positioning plug rod mechanism includes an open chute, and one end of the open chute is fixedly connected to the outer side of the blowout preventer housing. A slider is arranged inside the open chute, and one side of the slider is connected to the inner wall of one end of the open chute through a spring. A support plate is installed on the top of the slider, and a turning handle is arranged on the outer side of the support plate. One end of the turning handle is connected to a driving rod, and a gear is installed on the outer side of the driving rod. The gear meshes with a rack, and a moving plate is installed at the bottom of the rack. The bottom of the moving plate is connected to a pressing plate through a plurality of spring shafts, and a plug rod is installed at the bottom of the pressing plate. Plug rod grooves matched with the plug rod are formed on the blowout preventer housing and the upper cover.

[0005] Preferably, the slider is slidably connected to the inside of the open chute.

[0006] Through the above technical solution: it is convenient for the slider to move.

[0007] Preferably, a handle is installed on the outer side of the support plate, and a moisture absorption layer and an anti-slip layer are sequentially coated on the outer side of the handle.

[0008] Through the above technical solution, it is convenient to improve the anti-slip property during grasping.

[0009] Preferably, the moisture absorption layer is made of polyurethane material with high elasticity, good moisture absorption and air permeability, and the moisture absorption layer is adhesively fixed to the outer side of the grip. The anti-slip layer is made of latex material, and a plurality of groups of liquid drainage holes are formed on the surface of the anti-slip layer, and anti-slip convex points are arranged between the liquid drainage holes.

[0010] Through the above technical solution, it is convenient to improve the anti-slip property during grasping.

[0011] Preferably, the driving rod is rotatably connected to the side plate.

[0012] Through the above technical solution, it is convenient for the driving rod to rotate.

[0013] Preferably, a sliding through groove matching the rack is formed on the support plate, and the rack penetrates through the sliding through groove and is slidably connected to the sliding through groove.

[0014] Through the above technical solution, the moving stability of the rack is improved.

[0015] Compared with the prior art, the beneficial effect of the present utility model is: for the annular blowout preventer with a convenient disassembly and maintenance structure, to solve the problem that the shell and the upper cover of the existing annular blowout preventer are mostly connected by bolts, and it is relatively inconvenient to disassemble the upper cover during later maintenance. By symmetrically arranging a positioning plug rod mechanism on the outer side of the blowout preventer shell for use with the upper cover, the positioning plug rod mechanism includes an open chute, and one end of the open chute is fixedly connected to the outer side of the blowout preventer shell. A slider is arranged inside the open chute, and one side of the slider is connected to the inner wall of one end of the open chute through a spring. A support plate is installed on the top of the slider, and a turning handle is arranged on the outer side of the support plate. One end of the turning handle is connected to a driving rod, and a gear is installed on the outer side of the driving rod. The gear is meshed with a rack, and a moving plate is installed at the bottom of the rack. The bottom of the moving plate is connected to a pressing plate through a plurality of groups of spring shafts, and a plug rod is installed at the bottom of the pressing plate. When it is necessary to separate the upper cover from the blowout preventer shell, rotate the turning handle to move the plug rod upward. When the plug rod disengages from the inside of the plug rod groove, pull the support plate to move through the grip, so that the plug rod moves. When the plug rod is no longer above the upper cover, the upper cover can be separated from the blowout preventer shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the positional relationship of the positioning plug rod mechanism of the present utility model;

[0017] Figure 2 For the present utility model Figure 1 Enlarged structural schematic diagram at position A in;

[0018] Figure 3 For the present utility model Figure 1Schematic diagram of the enlarged structure at position B in the [device name];

[0019] Figure 4 Schematic diagram of the positional relationship between the moisture absorption layer and the anti-slip layer of the present utility model;

[0020] Figure 5 Schematic diagram of the anti-slip layer structure of the present utility model.

[0021] In the figure: 1, blowout preventer housing; 2, upper cover; 201, integral lifting ring; 3, positioning plug mechanism; 301, open chute; 302, slider; 303, support plate; 3031, handle; 3032, moisture absorption layer; 3033, anti-slip layer; 3034, drain hole; 3035, anti-slip bumps; 304, turning handle; 305, driving rod; 3051, side plate; 306, gear; 307, rack; 308, moving plate; 309, spring shaft; 310, abutting plate; 311, plug rod. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5 , the present utility model provides a technical solution: an annular blowout preventer with a structure convenient for disassembly and maintenance. The annular blowout preventer includes a blowout preventer housing 1 and an upper cover 2 movably arranged on the top of the blowout preventer housing 1. A positioning plug mechanism 3 cooperated with the upper cover 2 is symmetrically arranged on the outside of the blowout preventer housing 1.

[0024] In a further embodiment, integral lifting rings 201 are fixedly connected to both sides of the connection head of the upper cover 2.

[0025] Specifically, the positioning plug mechanism 3 includes an open chute 301, and one end of the open chute 301 is fixedly connected to the outside of the blowout preventer housing 1. A slider 302 is arranged inside the open chute 301, and one side of the slider 302 is connected to the inner wall of one end of the open chute 301 through a spring. A support plate 303 is installed on the top of the slider 302, and a turning handle 304 is arranged on the outside of the support plate 303. One end of the turning handle 304 is connected to a driving rod 305, and a gear 306 is installed on the outside of the driving rod 305. The gear 306 meshes with a rack 307, and a moving plate 308 is installed at the bottom of the rack 307. The bottom of the moving plate 308 is connected to an abutting plate 310 through a plurality of groups of spring shafts 309, and a plug rod 311 is installed at the bottom of the abutting plate 310. Plug rod grooves matching the plug rod 311 are formed in the blowout preventer housing 1 and the upper cover 2.

[0026] In a further embodiment, the slider 302 is slidably connected to the inside of the open chute 301.

[0027] Specifically, a grip 3031 is installed on the outer side of the support plate 303, and a moisture-absorbing layer 3032 and an anti-slip layer 3033 are sequentially coated on the outer side of the grip 3031.

[0028] In a further embodiment, the moisture-absorbing layer 3032 is made of a polyurethane material with high elasticity and good moisture absorption and breathability, and the moisture-absorbing layer 3032 is adhesively fixed to the outer side of the grip 3031. The anti-slip layer 3033 is made of latex material, and a plurality of groups of liquid discharge holes 3034 are formed on the surface of the anti-slip layer 3033. Anti-slip bumps 3035 are arranged between the liquid discharge holes 3034. When the palm sweats, the sweat will enter the liquid discharge holes 3034 and be absorbed by the moisture-absorbing layer 3032 communicated with the liquid discharge holes 3034, thereby reducing the accumulation of sweat on the surface of the anti-slip layer 3033, and further achieving the effect of moisture absorption and anti-slip.

[0029] In a further embodiment, a limiting hole is formed in the rotary handle 304, and the rotary handle 304 can be limited by cooperating with the limiting rod through the limiting hole in the later stage to prevent the rotary handle 304 from rotating self.

[0030] In a further embodiment, the driving rod 305 is rotatably connected to the side plate 3051.

[0031] Specifically, a sliding through groove matching with the rack 307 is formed in the support plate 303, and the rack 307 penetrates through the sliding through groove and is slidably connected to the sliding through groove.

[0032] When the upper cover 2 needs to be installed, the upper cover 2 is placed above the blowout preventer housing 1 at a specified position. At this time, the insertion rod groove of the upper cover 2 is communicated with the insertion rod groove of the blowout preventer housing 1. After the placement is completed, the grip 3031 is released, and under the action of the spring force, the support plate 303 drives the insertion rod 311 to move, so that the insertion rod 311 moves to directly above the insertion rod groove. At this time, the rotary handle 304 is rotated, and the rotary handle 304 drives the gear 306 to rotate through the driving rod 305. Under the action of the rotation of the gear 306, the rack 307 moves, thereby driving the moving plate 308, the spring shaft 309, the abutting plate 310 and the insertion rod 311 to move. When the insertion rod 311 is completely inserted into the insertion rod groove, the position of the upper cover 2 can be limited. At this time, the spring shaft 309 is in a compressed state, and under the reaction force of the spring shaft 309, the abutting plate 310 presses down the upper cover 2, so that the upper cover 2 is more tightly connected to the blowout preventer housing 1.

[0033] The orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model in a simplified manner, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the protection scope of the present utility model.

[0034] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An annular blowout preventer with a structure that is easy to disassemble and maintain, comprising an annular blowout preventer, the annular blowout preventer comprising a blowout preventer housing (1) and an upper cover (2) movably arranged on the top of the blowout preventer housing (1), both sides of the connection head of the upper cover (2) are fixedly connected with integral lifting rings (201), characterized in that: The outer side of the blowout preventer housing (1) is symmetrically provided with a positioning rod mechanism (3) for use with the upper cover (2), the positioning rod mechanism (3) comprising an open slide groove (301), and one end of the open slide groove (301) is fixedly connected to the outer side of the blowout preventer housing (1), a slider (302) is arranged inside the open slide groove (301), and one side of the slider (302) is connected to the inner wall of one end of the open slide groove (301) through a spring, a support plate (303) is installed on the top of the slider (302), and a turning handle (303) is arranged on the outer side of the support plate (303). 4), one end of the turning handle (304) is connected to the driving rod (305), and a gear (306) is installed on the outer side of the driving rod (305), the gear (306) is meshed with the rack (307), and a moving plate (308) is installed at the bottom of the rack (307), the bottom of the moving plate (308) is connected to the abutment plate (310) through a plurality of groups of spring shafts (309), and a plug rod (311) is installed at the bottom of the abutment plate (310), and a plug rod groove matching the plug rod (311) is opened on the blowout preventer housing (1) and the upper cover (2).

2. The annular blowout preventer with a structure that is easy to disassemble and maintain according to claim 1, characterized in that: The sliding block (302) is slidably connected to the inside of the open sliding groove (301).

3. The annular blowout preventer with a structure that is easy to disassemble and maintain according to claim 1, characterized in that: A handle (3031) is installed on the outer side of the support plate (303), and the outer side of the handle (3031) is sequentially coated with a moisture absorption layer (3032) and an anti-slip layer (3033).

4. The annular blowout preventer with a structure that is easy to disassemble and maintain according to claim 3, characterized in that: The hygroscopic layer (3032) is made of a polyurethane material with high elasticity and good moisture absorption and air permeability, and the hygroscopic layer (3032) is adhered and fixed to the outer side of the handle (3031). The anti-slip layer (3033) is made of a latex material, and a plurality of groups of drainage holes (3034) are provided on the surface of the anti-slip layer (3033), and anti-slip protrusions (3035) are provided between the drainage holes (3034).

5. The annular blowout preventer with a structure that is easy to disassemble and maintain according to claim 1, characterized in that: The driving rod (305) is rotatably connected to the side plate (3051).

6. The annular blowout preventer with a structure that is easy to disassemble and maintain according to claim 1, characterized in that: The support plate (303) is provided with a sliding through groove matching the rack (307), and the rack (307) passes through the sliding through groove and is slidably connected to the sliding through groove.

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